package u1;

import java.util.Arrays;
import gnu.trove.TIntIntHashMap;

public class Histogram {
  private TIntIntHashMap hist;

  public Histogram() {
    hist = new TIntIntHashMap();
  }

  /**
   * Count occurrences of value.
   * 
   * @param value
   * @return non-negative
   */
  public int getCount(int value) {
    return hist.get(value);
  }

  /**
   * @param value
   *                value to record one occurrence of
   */
  public void record(int value) {
    hist.adjustOrPutValue(value, 1, 1);
  }

  @Override
  public String toString() {
    final StringBuilder sb = new StringBuilder();
    int[] keys = hist.keys();
    Arrays.sort(keys);
    for (int k : keys) {
      sb.append(k);
      sb.append(" ");
      sb.append(hist.get(k));
      sb.append(Util.NL);
    }
    return sb.toString();
  }
}
/*
* Copyright (c) 2009 John Lees-Miller
* 
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
* 
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/

